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UNITED STATES PATENT OEFrcE.

JEREMIAH J. OOONNOR AND JOHN A. OOONNOR, OF PAWTUOKET, ASSIGNORS OFONE-THIRD TO ALBERT H. ALLEN, OF PROVIDENCE, RHODE ISLAND.

MACHINE FOR TWISTING THREAD, 84.0.

EJPECIPICATION forming part of Letters Patent No. 354,925, datedDecember 28, 1886.

Application filed J n] y 24, 1885. Serial No. 172,586.

T aZZ whom, it 71mg concern:

Be it known that we, JEREMIAH J. OOoiv- NOR and JOHN A. OOoNNoR, both ofPawtucket,in the county of Providence and State of Rhode Island, havejointly invented a new and useful Improvement in Machines for TwistingThread and other Yarns; and we do hereby declare the followingspecification, taken in connection with the accompanying drawings,forming a part of the same, to be a description thereof.

This invention relates to machines for twisting thread or other yarns;and it consists in combining with such a machine a device for cutting orsevering the thread or yarn between the delivery bobbins or spools andthe top rolls of the machine when by accident the thread or yarn becomesbroken between the said top rolls and the receiving bobbins or spools,and thereby preventing the thread or yarn being delivered from runningto waste, as will be hereinafter described, and set forth in the claims.

Forillustrating theinvention we have chosen a well-known thread-twistingmachine.

I11 the accompanying drawings, Figure 1 shows a front view of'a portionof such a machine with our, improved device for cutting or severing thethread applied thereto. Fig. 2 shows a top View of the same. Fig. 3represents a vertical section of the same on line mm of Fig. 1. Fig. 4shows in perspective certain parts of the machine and our devicecombined therewith.

A is the frame of the machine.

B are the deliverybobbins or spools, and B the creel or stand, uponpegs, b, projecting from which the bobbins B are mounted.

O are the receiving-bobbins mounted upon the spindles D, which spindlesare driven, in the usual manner, by bands d, Fig. 3, from thespindle-drum E. v

F is the ring-rail, which is furnished with the rings f and theirtravelers.

5 G is the bottom roll, which is driven from the drum E by a suitableand well-known train of gears, e, c, 6 c and c, Fig. 1, the gear 6 beingsecured to the drum-shaft, and the gear a to the shaft 9 of the roll G.

H are the top rolls, which areloosely mounted No model.)

to revolve in bearings H, Figs. 1 and 2, by frictional contact with theroll G, or with the threads passing between said rolls.

J is the guide-board over which the threads a pass from the bottomroll,G, to the receiving- 5 5 bobbins O.

K is a bar having guide-eyeslc for receiving the threads from thedelivery-bobbins B.

L is a trough for holdingwater to wet the thread and thereby facilitatethe twisting oporation, and Z is a glass guide-rod for keeping thethreads submerged as they pass through the water-trough L. The course ofeach thread a is from its bobbin B through the guide-eyes k k, thenceunder the rod Z and over and par- 6 tially around the roll H, thencepartially around the roll G to the guide-board J, and from thence to aring-traveler and a receivingbobbin 0.. As above described, the machineis of the usual construction.

Our device for cutting or severing the thread between thedelivery-bobbins and the feed-rolls will now be described, it beingunderstood that as many of these devices are employed as there arethreads running to thefeed-rolls GH. 7 5

M is a bell-crank lever,which is pivoted at its angle to one end of alever, N, mounted to tilt or swing vertically on a standard, it, securedto the frame of the machine, as particularly shown in Figs. 8 and 4. Thefree endm of the horizontal arm of the lever M is in the form of an eyeor hook, which engages and is supportedv by the thread while the latteris passing taut from the bottom roll,G,to the receiving-bobbin C. Thefree end m of the vertical arm of the lever M is bent at right angles,or furnished with a tooth to engage, when al lowed to do so, with one ofthe studs h, which may be more or less in number,proj ectin g from theside of a roll, H,in close proximity to which the end or tooth m of theleverMis normally located.

To the rear or inner end of the lever N a twopart link, 0, is pivoted,which link forks the head of a knife, P, forming one member ofa shear,the other member, P, of which consists of a block having aslot, p, inwhich the memher or knife P is arranged to move vertically. The shearmember 1? is furnished with oppositely-located holes, one, p, of whichis shown 100 in Fig. 4, and through these holes the thread a passes,under the knife P, on its way from the eye It to the eye k.

The operation of the device is as follows: During the normal running ofthe machine the thread a is taut between the roll G and the guide-boardJ, being held in such condition by the twisting operation, and the bentend or tooth m of the lever M is held out of the path of movement of thestuds h on the roll H by the engagement of the eye on with such tautthread. When, however, the thread breaks between the rolls G H and thereceiving-bobbin 0 the eye m of the lever M will no longer be supportedin the position shown in Figs. 2 and 4, and the lever M will tilt underthe influence of the weight of its horizontal arm and cause the bent endm of its vertical arm to swing into the path of movement of therevolving studs h, by one of which the said end or tooth m will beengaged as the roll Hrevolves in the direction of the arrow. Theengagement of a stud, h, with the end or tooth m of the lever M willraise said lever, thereby tilting the lever N and moving the knife Pdownwardly, and causing the shear P P to cut or sever the thread. Thethread being out, no more will pass from the delivery-bobbin B, and onlythat amount of thread between the break and the cut will be wasted.

In the machine shown in the drawings the thread upon a bobbin, B,consists of two strands, both of which are drawn from said bobbin andpass through the same eye, 7:, and

thence between the bottom roll, G, and a top roll, H, to be twisted. Aswill be readily understood, our improvement is equally applicable whenthe threads from two or more bobbins are together drawn through the sameguide-eye, k, to make a thread or yarn of larger size or greater weight.

If desired, the guide'eyes k k may be dispensed with, and the holes inthe shear member P be allowed to act as guides for the thread passingfrom the delivery-bobbins, as will be readily understood.

\Vhen it is considered that, in a machine as ordinarily constructedwithout our improvement, thread will be drawn from the deliverybobbinand will run to waste, (if the thread breaks between the top and bottomrolls and the receiving-bobbin,) until the attention of the operative iscalled to the matter, it will readily be seen that a great saving inthread or yarn will be eflected by the use of our device, which isautomatic in its operation.

\Vhat we claim as our invention, and desire to secure by Letters Patent,is

1. The combination, with the top and bottom rolls and the spindles, of ashear having a movable member and mechanism, substan; tially asdescribed, connecting the movable member with the rolls, whereby themovable member is operated by the rolls for severing the thread or yarnbefore it reaches'said rolls when the thread or yarn breaks between saidrolls and spindles, substantially as and for the purpose described.

2. The combination, with the top and bottom rolls, the former of whichis provided with studs, and the spindle, of a shear having a movablemember and mechanism, substantially as described, connected with themovable shear member and operated by the studs on said upper roll,substantially as and for the purpose set forth.

3; The combination, substantially as herein set forth, with the top andbottom rolls, the former of which is provided with a stud or studs, andthe spindles, of a pivoted lever, M, provided with an eye or hook, m,and aprojection or tooth, 'm, the said tooth being normally held out ofthe path of movement of said spur or spurs, as described, a shearthrough which the thread or yarn passes to said rolls, and connections,substantially as described, between the said lever and shear for communieating motion to the shear when the tooth m is engaged by the said spuror spurs.

4. The combination, with the top and bottom rolls, the former of whichis provided with a stud or studs, and the spindles, of the lever M,having an eye or loop, on, and tooth m, the lever N, to which lever M ispivoted, a suitable pivot or support for the lever N, the movable shearmember P, connected to the lever N, the shear member P, the said shearhaving a passage for the thread, and a support for the shear member P,substantiallyas and for the purpose specified.

5. The thread or yarn severer herein described, consisting of the leverM, having a loop or eye, m, and tooth m, the lever N, to which lever Mis pivoted, the shear member P, connected to the lever N, and the shearmember P, the said shear having a passage for the thread or yarn, thewhole being adapted to be attached to a machine for twisting thread oryarn, substantially as and for the purposes specified.

Witnesses:

W. H. THURSTON, S. J. MURPHY.

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